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STANFORD BIKE TRAFFIC PowerPoint PPT Presentation


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STANFORD BIKE TRAFFIC. Marisa Macias Janet Yu Xijia Chen. Goals of the Project. Make observations on daily Stanford traffic at specific times Express those observations using clear and creative visualizations

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STANFORD BIKE TRAFFIC

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STANFORD BIKE TRAFFIC

Marisa Macias

Janet Yu

Xijia Chen


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Goals of the Project

  • Make observations on daily Stanford traffic at specific times

  • Express those observations using clear and creative visualizations

  • Arrive at a conclusion about the safety of chosen locations on the Stanford campus throughout the day


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Assumptions Made

  • Most traffic occurs during given times between classes

    • 10 min. before the hour (morning); 5-15 min. after the hour (afternoon)

  • Traffic consistent throughout week

    • Monday is the same as Tuesday, etc.

  • Skateboarders, Rollerbladers, and Cars ignored

    • Assumed that they constituted small percentage of traffic


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Problems Encountered

  • Limited time in which to accomplish project

  • Human error

    • Too many people

    • Bicyclists doing U-turns

  • Conditions not indicative of year-round traffic

    • Weather sunny for all four days


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Choice of Method

  • Criteria:

    • 3D --> 3D visualizations

    • Creative and clear

  • Possible Candidates:

    • Scatter plots, line plots, density plots, bar graphs, pie charts

  • Process of elimination


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The Chosen Methods

  • Parallel Plot Bar Graphs

    • Color clearly differentiates type of traffic

    • Independent variables: time vs. location

    • Dependent variables: number of bicyclists, pedestrians, and helmets

  • Density Plot

    • Clearly see totals at one time

    • Color also used to identify types of traffic


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Conclusions

  • Traffic generally decreases over time

  • Higher percentage of helmets later in the day

  • Tower and Gates had most traffic in one day

    • Tower at 1:05 - 1:15 PM -- most bicyclists and pedestrians w/ small percentage of helmets

  • Amount of helmets compared to bicyclists small


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